— Harry TrumanThis is attributed to Truman in some sources, but a similar saying is recorded as early as [https://books.google.com/books?id=bidJAAAAIAAJ&dq=how%20much%20%22care%20who%20gets%20the%20credit%22&pg=PA26#v=onepage&q=how%20much%20%22care%20who%20gets%20the%20credit%22&f=false 1909].

— Harry TrumanContext: Now days battles are just sort of a "You shoot up my town and I'll shoot up yours." They say that Americans don't play fair. They shoot 'em up all the time. I hope so because I want to finish this job as soon as possible and begin making an honest living again... Have fired 500 rounds at the Germans, at my command, been shelled, didn't run away thank the Lord and never lost a man. Probably shouldn't have told you but you'll not worry any more if you know I'm in it than if you think I am. Have had the most strenuous work of my life, am very tired but otherwise absolutely in good condition physically mentally and morally... When a High Explosive shell bursts in fifteen feet and does you no damage, you can bet your sweet life you bear a charmed life and no mistake. I didn't have sense enough to know what was going on until the next day and then I was pretty scared. The men think I am not much afraid of shells but they don't know. I was too scared to run and that is pretty scared.
[https://www.trumanlibrary.org/whistlestop/study_collections/ww1/documents/fulltext.php?documentid=1-15 Letter to Bess Wallace (8 September 1918)]

— Harry TrumanContext: On the one hand, the Republicans are telling industrial workers that the high cost of food in the cities is due to this government's farm policy. On the other hand, the Republicans are telling the farmers that the high cost of manufactured goods on the farm is due to this government's labor policy.
That's plain hokum. It's an old political trick: "If you can't convince 'em, confuse 'em." But this time it won't work.
Address at the National Plowing Match (18 September 1948); as quoted in Miracle of '48: Harry Truman's Major Campaign Speeches and Selected Whistle-stops (2003); edited by Steve Neal. Truman's mention of an "old political trick" is often quoted alone as if it were a strategy he was advising rather than one he was criticizing.

— Harry TrumanContext: It is an awful responsibility which has come to us.
We thank God that it has come to us, instead of to our enemies; and we pray that He may guide us to use it in His ways and for His purposes.

— Harry TrumanContext: If wars in the future are to be prevented the nations must be united in their determination to keep the peace under law.
Nothing is more essential to the future peace of the world than continued cooperation of the nations which had to muster the force necessary to defeat the conspiracy of the Axis powers to dominate the world.
While these great states have a special responsibility to enforce the peace, their responsibility is based upon the obligations resting upon all states, large and small, not to use force in international relations except in the defense of law. The responsibility of the great states is to serve and not to dominate the world.

— Harry TrumanContext: We want no Gestapo or Secret Police. F. B. I. is tending in that direction. They are dabbling in sex life scandles [sic] and plain blackmail when they should be catching criminals. They also have a habit of sneering at local law enforcement officers.
[https://trumanlibrary.org/whistlestop/study_collections/trumanpapers/psf/longhand/index.php?documentVersion=both&documentid=hst-psf_naid735219-01&pagenumber=2 Longhand Note of President Harry S. Truman, May 12, 1945.]

— Harry TrumanContext: Sixteen hours ago an American airplane dropped one bomb on Hiroshima and destroyed its usefulness to the enemy. That bomb had more power than 20,000 tons of TNT. It had more than two thousand times the blast power of the British "Grand Slam" which is the largest bomb ever yet used in the history of warfare.
The Japanese began the war from the air at Pearl Harbor. They have been repaid many fold. And the end is not yet.

— Harry TrumanContext: Any man who sees Europe now must realize that victory in a great war is not something you win once and for all, like victory in a ball game. Victory in a great war is something that must be won and kept won. It can be lost after you have won it — if you are careless or negligent or indifferent.
Europe today is hungry. I am not talking about Germans. I am talking about the people of the countries which were overrun and devastated by the Germans, and particularly about the people of Western Europe. Many of them lack clothes and fuel and tools and shelter and raw materials. They lack the means to restore their cities and their factories.
As the winter comes on, the distress will increase. Unless we do what we can to help, we may lose next winter what we won at such terrible cost last spring. Desperate men are liable to destroy the structure of their society to find in the wreckage some substitute for hope. If we let Europe go cold and hungry, we may lose some of the foundations of order on which the hope for worldwide peace must rest.
We must help to the limits of our strength. And we will.

— Harry TrumanContext: If wars in the future are to be prevented the nations must be united in their determination to keep the peace under law.
Nothing is more essential to the future peace of the world than continued cooperation of the nations which had to muster the force necessary to defeat the conspiracy of the Axis powers to dominate the world.
While these great states have a special responsibility to enforce the peace, their responsibility is based upon the obligations resting upon all states, large and small, not to use force in international relations except in the defense of law. The responsibility of the great states is to serve and not to dominate the world.

— Harry TrumanContext: At the present moment in world history nearly every nation must choose between alternative ways of life. The choice is too often not a free one.
One way of life is based upon the will of the majority, and is distinguished by free institutions, representative government, free elections, guarantees of individual liberty, freedom of speech and religion, and freedom from political oppression.
The second way of life is based upon the will of a minority forcibly imposed upon the majority. It relies upon terror and oppression, a controlled press and radio; fixed elections, and the suppression of personal freedoms.
I believe that it must be the policy of the United States to support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures.
I believe that we must assist free peoples to work out their own destinies in their own way.
Speech to a joint session of the US Congress (12 March 1947), outlining what became known as The Truman Doctrine